package com.cheng.example.view.chap01;


public class Client04 {

    public void f1(Object o) {
        System.out.println("object");
    }

    public void f1(String s) {
        System.out.println("string");
    }


    public static void main(String[] args) {
        Client04 client04 = new Client04();
        client04.f1(null);
    }

}
